EP3450343B1 - Plastic bag and hand strap for a plastic bag - Google Patents

Description

The present invention relates to a reusable plastic carrier bag for a plastic carrier bag.

Carrying bags, as they are usually made available by retailers for customers to transport goods, are usually made of plastic or paper. While these transport containers were previously often intended for single use, there is now an increasing demand for suitable transport containers that can be reused. Reusable plastic carrier bags are often larger in size and have carrying loops attached separately to the front and rear walls. Such conventional loop pockets can be found, for example, in the DE 101 16 920 A1 , the WO 01/51372 A1 and the DE 40 12 897 A1 disclosed.

EP 0 457 019 A1 relates to a carrier bag made of thermoplastic with inwardly folded edge areas of different lengths and carrying loops attached there. The carrier bag should be distinguished by a simple and inexpensive manufacturing method and disposability.

DE 87 05 849 U1 relates to sales packaging comprising inwardly folded edge areas to which carrying handles are attached and whose front and back are equipped with a tear-off perforation at the top. The task of the sales packaging is to indicate that it has been opened for the first time with a sealing function and to be reusable at the same time.

DE 14 57 232 A1 relates to a robust, two-layer carrier bag made of thermoplastic material with inwardly folded carrier bag edges consisting of three or more layers, in which a handle is integrated.

DE 296 12 070 U1 relates to a two-ply carrier bag for frozen goods which has a handle that can be guided through a slot in a foldable front or rear wall so that the carrier bag opening is closed.

In particular in the case of reusable plastic carrier bags with larger dimensions, sufficient load-bearing capacity or carrying strength can sometimes be problematic due to mechanical wear. In this case, weight-related tearing off or tearing through a wrist strap or in the area where the wrist strap is attached is unacceptable. Not least for this reason, the commercial buyers of loop carrier bags, for example department stores and wholesale chains, place very high demands on the quality of such bags. The disadvantage of the known, larger-sized loop carrier bags is always their rather complex production.

The present invention was therefore based on the object of providing plastic carrier bags, in particular reusable plastic carrier bags, which do not have the disadvantages of the prior art carrier bags and which are particularly suitable for the repeated, reliable transport of heavy loads and which can also be produced in a simple and cost-effective way in serial production.

Accordingly, a plastic carrier bag with a closed or substantially closed bottom end and an opposite opening end has been found, comprising a front wall and a rear wall, each with a first side edge and an opposite second side edge and an opening edge and a base edge, the front wall and the rear wall in the area their first and second side edges and their bottom edges are at least partially connected to one another directly or via side walls or side gussets and / or a bottom gusset, as well as at least one holding loop connected to the front wall and at least one holding loop connected to the rear wall, each with a first and a second connection area, the Front and rear walls are multi-layered, in particular double-layered, comprising at least one inner layer, in particular an inner layer, and an outer layer, and the front and / or rear wall in the region of the opening end one, in particular especial reinforcement area extending to the opening end or encompassing it, containing at least one inside or outside attached to the front wall and at least one inside or outside attached to the rear wall and spaced from or spaced from the first side edge in the direction of or up to second side edge extending multi-layer, in particular double-layer, plastic film strips, wherein
the holding loop connected to the front wall and the back wall are each welded and / or glued in their first and second connection areas to the multilayer plastic film strip of the reinforcement area and also to the at least one inner layer, in particular the inner layer, or the outer layer, and where
the multilayer plastic film strip of the reinforcement area of the front wall is attached to the inner or outer layer, in particular from or at a distance from the first side edge in the direction of or up to the second side edge, by means of welding and / or gluing, and wherein
the multilayer plastic film strip of the reinforcement area of the rear wall is attached to the inner or outer layer, in particular from or at a distance from the first side edge in the direction of or up to the second side edge, by means of welding and / or gluing,
The holding loop connected to the front wall via its first and second connection areas and the holding loop connected to the rear wall via its first and second connection area in the area from the respective first to the second connection area at least in sections a first flexible tubular hollow body or a multi-layered strip of material that does not form a hollow body , in particular strips of plastic material, which is at least partially, in particular substantially completely, encased by a second flexible tubular hollow body.

With the above-described embodiment of a plastic carrier bag according to the invention, in addition to excellent carrying comfort, an improved mechanical load-bearing capacity, in particular of reusable plastic carrier bags, is ensured. Both the holding loop as such and its connection to the body of the plastic carrier bag are characterized by a special tear resistance.

Furthermore, a plastic carrier bag was found with a closed or substantially closed bottom end and an opposite opening end, comprising a front wall and a rear wall, each with a first side edge and an opposite second side edge and an opening edge and a bottom edge, the front wall and the rear wall in Area of their first and second side edges and their bottom edges are at least partially connected to one another directly or via side walls or side gussets and / or a bottom gusset, as well as at least one holding loop connected to the front wall and at least one holding loop connected to the rear wall, each with a first and a second connection area, wherein the front and rear wall are multi-layered, in particular double-layered, comprising at least one inner layer, in particular an inner layer, and an outer layer, and that the front and / or rear wall has a, in particular has reinforcement area extending to the opening end or encompassing this, containing at least one inside or outside attached to the front wall and at least one inside or outside attached to the rear wall and spaced from or spaced from the first side edge in the direction of or up to Multi-layer, in particular double-layer, plastic film strips extending over the second side edge, the holding loop connected to the front wall and the rear wall each in their first and second connection areas with the multi-layer plastic film strip of the reinforcement area and also with the at least one inner layer, in particular the inner layer, or the Outer layer are welded and / or glued, the multilayer plastic film strip of the reinforcement area of the front wall being attached to the inner or outer layer, in particular from or at a distance from the first side edge in the direction of or up to the second side edge, by means of welding and / or gluing, The multi-layer plastic film strip of the reinforcement area of the rear wall is attached to the inner or outer layer, in particular from or at a distance from the first side edge in the direction of or up to the second side edge, by means of welding and / or gluing, with a continuation section adjoining the outer layer wherein the continuation section comprises or represents the plastic film strip of the reinforcement area and wherein the continuation section extends at least in sections along the outside of the at least one inner layer, in particular the inner layer, and rests or can be applied thereto.

With the above-described embodiment of a plastic carrier bag according to the invention, a reinforcement is made available in the upper edge area, which withstands high mechanical loads and provides a very effective basis for the connection of retaining loops. The plastic carrier bag provided with such a reinforcement area can also be opened easily and without problems.

In a preferred embodiment of the plastic carrier bag specified above, it can be provided that the holding loop connected to the front wall via its first and second connection areas and the holding loop connected to the rear wall via its first and second connection area in the area from the respective first to the second connection area at least in sections a first flexible tubular hollow body or a multi-layer material strip, in particular plastic material strip, which does not form a hollow body, which is at least partially, in particular essentially completely, encased by a second flexible tubular hollow body.

With the above-described embodiment of a plastic carrier bag according to the invention, in addition to excellent carrying comfort, an improved mechanical load-bearing capacity, in particular of reusable plastic carrier bags, is ensured. Both the holding loop as such and its connection to the body of the plastic carrier bag are characterized by a special tear resistance.

Furthermore, a plastic carrier bag with a closed or substantially closed bottom end and an opposite opening end was found, comprising a front wall and a rear wall, each with a first side edge and an opposite second side edge as well as an opening edge and a bottom edge, the front wall and the rear wall in the area of their first and second side edges and their bottom edges at least in sections directly or via side walls or side folds and / or a bottom fold are connected to one another, as well as at least one holding loop connected to the front wall and at least one holding loop connected to the rear wall, each with a first and a second connection area, wherein the front and rear wall are multi-layered, in particular double-layered, comprising at least one inner layer, in particular an inner layer and an outer layer, and that the front and / or rear wall in the area of the opening end has a reinforcement area, in particular extending to the opening end or encompassing it, containing at least one inside or outside of the Front wall attached and at least one inside or outside attached to the rear wall and from or at a distance from the first side edge in the direction of or up to the second side edge extending multilayer, in particular double-layer, plastic film strips, the holding loop connected to the front wall and the back wall in their first and second connection areas with the multilayer plastic film strip of the reinforcement area and also with the at least one inner layer, in particular the inner layer, or the outer layer are welded and / or glued, and the multilayer plastic film strip of the reinforcement area of the front wall with the inner or outer layer , in particular from or at a distance from the first side edge in the direction of or up to the second side edge, is fastened by means of welding and / or gluing, and wherein the multilayer plastic film strip of the reinforcement area of the rear wall mi t the inner or outer layer, in particular from or at a distance from the first side edge in the direction of or up to the second side edge, is fastened by means of welding and / or gluing, with a continuation section adjoining the at least one inner layer, in particular the inner layer, wherein this continuation section comprises or represents the plastic film strip of the reinforcement area, in which this continuation section extends at least in sections along the outside of the at least one inner layer, in particular the inner layer, and rests or can be applied thereto. With the above-described embodiment of a plastic carrier bag according to the invention, a reinforcement is made available in the upper edge area, which withstands strong mechanical loads and a very effective basis for the connection of holding straps supplies. The plastic carrier bag provided with such a reinforcement area can also be opened easily and without problems.

In a preferred embodiment of the plastic carrier bag specified above, it can be provided that the holding loop connected to the front wall via its first and second connection areas and the holding loop connected to the rear wall via its first and second connection area in the area from the respective first to the second connection area at least in sections a first flexible tubular hollow body or a multi-layer material strip, in particular plastic material strip, which does not form a hollow body, which is at least partially, in particular essentially completely, encased by a second flexible tubular hollow body. With the above-described embodiment of a plastic carrier bag according to the invention, in addition to excellent carrying comfort, an improved mechanical load-bearing capacity, in particular of reusable plastic carrier bags, is ensured. Both the holding loop as such and its connection to the body of the plastic carrier bag are characterized by a special tear resistance. By combining the features that form the reinforcement area with the features of the retaining loop, a particularly robust and resilient plastic carrier bag is obtained.

Such plastic carrier bags according to the invention are also particularly advantageous in which the holding loop connected to the front wall and the back wall in their first and second connection areas with the multilayer plastic film strip of the reinforcement area, and also with the at least one inner layer, in particular the inner layer, and / or the outer layer, are thermoplastically welded. Here, thermoplastic welding has regularly proven to be particularly suitable for achieving a tear-proof connection to the body of the plastic carrier bag, in particular to the reinforcement area. Surprisingly, particularly good results are obtained in that the thermoplastically welded first and second connection areas of the retaining loops in the reinforcement area do not overlap with other welding or adhesive zones.

A reinforcement area in the sense of the present invention is to be understood as that section in the area of the opening end in which the single or multi-layer, in particular double-layer, plastic film strip is present. In this section there is regularly an overlap of sections of the inner and outer layers of the front and rear wall with the plastic film strip. In this overlapping section there are also connections between these individual layers or foils.

For many applications of the plastic carrier bags according to the invention, it has proven to be advantageous that the first and second connection areas of the holding loop connected to the front wall or the first and second connection areas of the holding loop connected to the rear wall on the inside of the front and rear wall in the area of the multi-layer Plastic film strips of the reinforcement area are present. This attachment is particularly advantageous because the reinforcement area of the plastic carrier bag according to the invention is preferably regularly on the inside, so that the holding loop is connected directly to this reinforcement area via its connection areas. In this way it can also be prevented that the upper edges of the carrier bag form abutting edges when goods are inserted and are pressed inwards by contact with the goods and thereby reduce or make access to the bag more difficult. Because the holding loops attached on the inside allow the upper edges of the carrier bag to be bent outwards and so to prevent contact with the goods. A relatively large opening area is thus ensured.

In a preferred embodiment of the plastic carrier bag according to the invention it can be provided that the holding loop connected to the front wall and / or to the rear wall, in particular on the inside, in its first and second connection areas, directly or indirectly, with the single or multi-layer plastic film strip of the reinforcement area , and is welded, in particular thermoplastically welded, and / or glued to the at least one inner layer, in particular the inner layer, and the outer layer, with at least the inner side of the second hollow body of the retaining loop, in particular the inwardly facing, in these first and second connection areas Side of the second flexible plastic material strip, with the outside of the first hollow body or the facing side of the single or multi-layered material strip that does not form a hollow body, in particular the outwardly facing side of the first flexible plastic material strip, welded, in particular thermoplastically welded, and / or glued.

If the first and second connection areas of the retaining loop are in direct contact with the plastic film strip of the reinforcement area, the connection with the at least one inner layer, in particular the inner layer, and the outer layer takes place indirectly, i.e. via the adjacent adjacent layer. In a corresponding manner, if the first and second connection areas of the holding loop are in direct contact with the outer or inner layer, the connection with the at least one inner layer, in particular the inner layer, or the outer layer and the layer (s) of the plastic film strip of the reinforcement area can be made regularly indirectly, ie take place via the respective adjacent adjacent layer. In some configurations, for example, during welding, in particular thermoplastic welding, the melted material of the layers involved can be mixed up so that it is no longer possible to clearly assign the material to the layers.

In a further development of the plastic carrier bags according to the invention, these can have a first and a second holding loop connected to the front wall via first and second connection areas, the first holding loop between the associated first and second connection areas being longer than the second holding loop.

Alternatively and preferably in addition, these plastic carrier bags can have a first and a second holding loop connected to the rear wall via first and second connection areas, the first holding loop between the associated first and second connection areas being longer than the second holding loop. In this way, a holding loop or a pair of holding loops for carrying by hand and a further holding loop or a pair of holding loops for carrying the plastic carrier bag over the shoulder can be made available. The first and second connection areas of the first and second retaining loops of the front wall and / or rear wall can lie congruently one above the other or be manufactured in one operation or can each be present separately from one another. In the case of the last-mentioned embodiment, it has proven to be advantageous if the first and second connection areas of the shorter holding loop, i.e. the holding loop with the smaller extension between these connection areas, are between the first and second connection areas of the longer holding loop on the front and rear wall .

With regard to the retaining loops of the plastic carrier bags according to the invention, those are preferred in which the first flexible, in particular tubular, hollow body is formed from a first flexible plastic material strip with opposing first and second longitudinal side edges, the opposing first and second longitudinal side edges of which are welded to one another in an overlapping area, in particular thermoplastically welded, and / or are glued and / or, preferably and, in which the second flexible, in particular tubular, hollow body is formed from a second flexible plastic material strip with opposing first and second longitudinal side edges, the opposing first and second longitudinal side edges of which are welded to one another in a second overlapping area, in particular are thermoplastically welded and / or glued.

The first and second flexible plastic material strips, for example in the form of polyolefin film strips, in particular polyethylene film strips, can in a preferred embodiment have a rectangular shape when spread out flat. The longitudinal edges of these material strips can then be moved towards one another, forming the first or second, in particular tubular, hollow body and connected to one another in the overlapping area. Here, the first longitudinal side edge can come to rest both above and below the second longitudinal side edge in an overlapping area.

A particularly high degree of strength is achieved in this case, in particular, that the first plastic material strip of the first flexible, in particular tubular, hollow body and the second plastic material strip of the second flexible, in particular tubular, hollow body, at least in sections, in particular along the first and second overlapping areas, with one another welded, in particular thermoplastically welded, and / or glued.

In many cases, it has proven to be useful to weld the first and second plastic material strips in the first and second overlap areas in a single process step, i.e. essentially simultaneously. This creates a uniform weld seam extending along the, in particular, tubular holding loop. This embodiment has the further advantage that the first and the second flexible hollow body are connected to one another, in particular thermoplastically welded, in the area of this uniform weld seam, which results in a further increased mechanical strength. Alternatively, the first and second, in particular tubular, hollow bodies can also be connected to one another in areas or continuously along their entire length, in particular along a connecting strip, without the first and second overlapping areas themselves overlapping in this connecting area.

In an alternative embodiment, with regard to the connection of the first and second flexible hollow bodies, it can be provided that the first flexible, in particular tubular, hollow body is formed from a first flexible plastic material strip with opposing first and second longitudinal side edges and that the second flexible, in particular tubular, hollow body is formed from a second flexible plastic material strip is formed with opposing first and second longitudinal side edges, the first longitudinal side edge of the first plastic material strip with the first longitudinal side edge of the second material strip and this first longitudinal side edge of the second plastic material strip with the second longitudinal side edge in the overlapping area of the first and second longitudinal side edge of the first flexible plastic material strip of the first plastic material strip welded, in particular thermoplastically welded, and / or glued and where in the overlap area of the first and second longitudinal side edge of the second flexible plastic material strip, the second longitudinal side edge of the first plastic material strip with the second longitudinal side edge of the second material strip and this second longitudinal side edge of the first plastic material strip are welded to the first longitudinal side edge of the second plastic material strip, in particular thermoplastically welded, and / or glued.

For many applications it has proven to be expedient to use plastic carrier bags in which the first retaining loop containing the first and second flexible, in particular tubular, hollow bodies and / or the second retaining loop containing the first and second flexible, in particular tubular, hollow bodies with the formation of two opposite longitudinal fold edges are pressed flat, with the overlap areas of the opposite first and second longitudinal side edges of the first and second flexible plastic material strips of the first and second flexible hollow bodies of the first and / or second retaining loop being present between the opposite longitudinal fold edges and in particular on the same side. Alternatively, it can also be provided that the first retaining loop containing the single or multi-layer material strip, which does not form a hollow body, and the second flexible, in particular tubular, hollow body and / or the second retaining loop containing the single or multi-layer material strip, which does not form a hollow body, and the second flexible, in particular tubular, hollow bodies with the formation of two opposing longitudinal folding edges are available pressed flat, with the overlap area of the opposing first and second longitudinal side edges of the second flexible plastic material strip of the second flexible hollow body of the first and / or second retaining loop being present between the opposing longitudinal folding edges. With the aid of the preceding embodiments, the preliminary stage for the holding loop can be temporarily stored wound on a roll in a pressed flat state and, if necessary, separated from it. The flat, pressed holding loop also makes it comfortable to wear and allows for an even distribution of the carrying forces.

A further advantageous embodiment, in particular also of the preceding embodiment, provides that in the first and / or second connection area of the first and / or second retaining loop, in particular the flatly pressed, that side of the, in particular flatly pressed, retaining loop is the connection side that is not the overlap areas of the having opposite first and second longitudinal side edges of first and second flexible plastic material strips of the first and second flexible hollow bodies. Surprisingly, it has been shown that particularly good mechanical stability and tear resistance are achieved in this way.

With the holding loops for the plastic carrier bags according to the invention, it is also possible for the first time to realize such embodiments in which the second flexible, in particular tubular, hollow body of the retaining loop of the front and / or rear wall, in particular the second flexible plastic material strip which forms or contains the second flexible, in particular tubular, hollow body of the retaining loop of the front and / or rear wall, is based on an at least partially transparent plastic material, in particular polyethylene , which is at least partially on the inside, in particular by means of a reverse printing process, printable or printed. Since the pressure is present on the inside of the second hollow body of the retaining loop in the embodiment described, it is not impaired when worn, for example by abrasion. This is also possible with an embodiment according to the invention, in which the first flexible, in particular tubular, hollow body or the single or multi-layer material strip, in particular plastic material strips, which do not form a hollow body, of the retaining loop of the front and / or rear wall can be printed or printed on the outside at least in sections and that the second flexible, in particular tubular, hollow body of the retaining loop is based on or consists of an at least partially transparent plastic material, in particular polyethylene. The preceding configurations of the plastic carrier bag according to the invention also allow the holding loop or the holding loops to be used as a carrier for information or advertising material or for attaching design elements.

In addition, it can be provided within the meaning of the invention that the outer layer is based on or consists of an at least partially transparent plastic material, in particular polyethylene, which can be printed or printed on the inside at least partially, in particular by means of a reverse printing process. Furthermore, the plastic carrier bag according to the invention alternatively or additionally comprises at least one inner layer, in particular the inner layer, which is at least partially printable or imprinted on the outside and wherein the outer layer is based on or consists of an at least partially transparent plastic material, in particular polyethylene.

In particular, to create a pleasant feel that comes close to that of textile retaining loops, it has proven to be advantageous that the first flexible, in particular tubular, hollow body, in particular the first flexible plastic material strip, or the single or multi-layered material strip that does not form a hollow body and / or the second flexible, in particular tubular, hollow body, in particular the second flexible plastic material strip, the retaining loop of the front and / or rear wall, at least in sections, in particular over the entire surface, have an embossed pattern. Such embossing patterns can be used, for example, when using thermoplastics, from polyolefins, for example, reliably and permanently through the action of heat and pressure.

A pronounced reinforcement of a plastic carrier bag according to the invention is also achieved in that a continuation section adjoins the outer layer, this continuation section comprising or representing the plastic film strip of the reinforcement area and wherein the continuation section extends at least in sections along the outside of the at least one inner layer, in particular the inner layer and is applied to this or can be applied. This, in particular at least double-layer, continuation section is welded and / or glued to the outside of the at least one inner layer, in particular the inner layer, and optionally the outer layer, along an extension of or at a distance from the first side edge in the direction of or up to the second side edge, especially with a continuous longitudinal weld. Here, too, a particularly pragmatic and at the same time pronounced reinforcement can be achieved in that the continuation section present on the outside of the at least one inner layer, in particular the inner layer, in particular by means of turning over, at least in some areas is designed in two layers. An embodiment in which the outer layer comprises or forms the opening edge has also proven to be particularly expedient, the at least one inner layer, in particular the inner layer, extending with its upper edge up to the opening edge or at a distance therefrom.

For many embodiments of the plastic carrier bags according to the invention it has proven to be pragmatic to form the opening edge by folding at the upper end of the outer layer or in the transition area from the outer layer to the continuation section.

Alternatively, a pronounced reinforcement of a plastic carrier bag according to the invention surprisingly also succeeds in that a continuation section adjoins the at least one inner layer, in particular the inner layer, this continuation section comprising or representing the plastic film strip of the reinforcement area, in which this continuation section extends at least in sections along the outside of the at least one inner layer, in particular the inner layer, extends and rests or can be applied to this. This, in particular at least double-layer, continuation section is welded and / or glued to the outside of the at least one inner layer, in particular the inner layer, and optionally the outer layer, along an extension of or at a distance from the first side edge in the direction of or up to the second side edge, especially with a continuous longitudinal weld. The one on the outside of the at least one inner layer, In particular, the continuation section present in the inner layer is, in particular by means of folding, at least regionally configured to have at least two layers.

Also with regard to the preceding embodiments, it has proven to be pragmatic for many embodiments of the plastic carrier bags according to the invention to fold the opening edge at the upper end of the at least one inner layer, in particular the inner layer, or in the transition area from the at least one inner layer, in particular the inner layer, to form the continuation section.

In a particularly preferred embodiment, in the case of plastic carrier bags according to the invention, the outer layer and the continuation section of the front wall or the rear wall are formed in one piece. The at least one inner layer, in particular the inner layer, and the continuation section of the front wall or the rear wall can also be designed in one piece. In addition, the outer layers of the front and rear walls can be formed in one piece. Alternatively or additionally, the inner layers of the front and rear wall can also be designed in one piece. This surprisingly leads to plastic carrier bags that can also be easily and reliably manufactured in mass production. The preceding embodiment also allows efficient access to sorted recycling.

The continuation section can, for example, be designed with at least two layers by means of turning over or folding back in such a way that the turned over section is turned over inwards in the direction of the inner layer in the sense of a fold. On the other hand, this can be done by turning or folding outwards. A corresponding procedure can be used for the continuation section of the inner layer.

In an expedient embodiment of the plastic carrier bag according to the invention, it can also be provided that that, in particular the folded or folded back, layer of the single or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the outer layer, which is directly on the inside of the inner layer rests or can be applied, in the direction of the opening end has a section which goes beyond the upper edge of the inner layer, this section extending beyond this upper edge being turned over this upper edge of the inner layer and at least in sections on the outside of the inner layer and / or the Inside of the outer layer is applied or can be applied. In this way, particularly easy-to-use, reusable plastic carrier bags are obtained. It has surprisingly been found that in the embodiment shown above, the upper edge regions of the front and rear walls that are in contact with one another in the still unused state can be detached from one another particularly easily. This embodiment also gives the customer a very high quality impression.

In a particularly expedient embodiment, the plastic film strip of the reinforcement area is designed with two layers, preferably in such a way that the folded or folded layer is significantly smaller than the previous layer before the turning point. In many cases, it is sufficient if the plastic film strip is only folded over or folded back to one extent, be it inward or outward, that the double-layered section obtained is sufficient to bring about an attachment to the inner and / or outer layer. This folded or folded end section can be present completely in the fastening / connection, for example by means of thermoplastic welding, or it can have a section that extends slightly beyond this fastening area. In the same way, it can be provided that the fastening or connection, for example thermoplastic welding, is not yet present at the reversal point of the folded or folded-over section. Accordingly, in a preferred embodiment it can be provided that the folded-over layer of the double-layer plastic film strip of the reinforcement area, in particular the continuation section, of the front wall has a folded-over end section represents, which does not extend to the upper edge of the inner and / or outer layer, and the end of which is in the fastening of the plastic film strip, in particular the continuation section, with the outer and / or inner layer, or this end section is at least partially together in the fastening of the plastic film strip, in particular the continuation section, with the outer and / or inner layer is present and the end of which is adjacent to this attachment, in particular not more than 1 cm or 2 cm away from it. As an alternative or in addition, it can be provided here that the folded-over layer of the double-layer plastic film strip of the reinforcement area, in particular the continuation section, of the rear wall represents a folded-over end section that does not extend to the upper edge of the inner and / or outer layer, and its end in the Attachment of the plastic film strip, in particular the continuation section, with the outer and / or inner layer, or with this end section at least partially present in the attachment of the plastic film strip, in particular the continuation section, with the outer and / or inner layer and its end adjacent to this attachment is present, in particular not more than 1 cm or 2 cm away from it.

In an expedient embodiment of a plastic carrier bag according to the invention it can be provided that the multilayer, in particular double-layer, plastic film strip of the reinforcement area, in particular the multilayer, in particular double-layer, continuation section of the front and / or rear wall, over all of its layers with the inside of the at least one inner layer , in particular the inner layer, along the extension of or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continuous longitudinal weld, welded, in particular thermoplastically welded, and / or glued to form a first connecting strip, this first Connecting strips are preferably spaced closer to the lower edge of the reinforcement area than to the upper edge thereof, in particular on or adjacent to the lower edge of the reinforcement area. A particularly stable opening edge of the plastic carrier bag according to the invention can be obtained simply by using the first connecting strip, especially if it is in the form of a thermoplastic weld seam.

A connection or welding of the plastic film strip or the continuation section of the front and / or rear wall to the at least one inner layer, in particular the inner layer, for example the inside of the inner layer, includes regularly the connection of all layers lying against one another here. The same generally applies to the connection of the plastic film strip or the continuation section of the front and / or rear wall to the outer layer.

In a particularly advantageous embodiment it is provided that in addition the outer layer of the front and / or rear wall with the outer side of the at least one inner layer, in particular the inner layer, along the extension of or at a distance from the first side edge in the direction of or up to the second side edge , in particular with a continuous longitudinal weld, welded, in particular thermoplastically welded, and / or glued to form a second connecting strip, this second connecting strip preferably being closer to the lower edge of the reinforcement area than to its upper edge, in particular at or adjacent to the lower edge the gain area. In this way, an even stronger opening edge is obtained. It is very particularly preferred if the first and second connecting strips are at least partially, preferably completely, essentially overlapping.

A particularly high degree of stability and tear resistance is achieved in the aforementioned embodiments of a plastic carrier bag according to the invention in that the first and second connection areas of the holding loops connected to the front wall and / or to the rear wall are spaced apart from the first and / or or second connection strips are present, in particular have no overlap with the first and / or second connection strips.

In the case of the plastic carrier bag according to the invention, it is preferred that the outer layer, the multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner and / or outer layer, and the at least one inner layer, in particular the inner layer, of the front and / or rear wall and optionally the retaining loops connected to the front wall and / or to the rear wall, in particular their first and / or second flexible plastic material strips and / or the single or multi-layer material strip, which does not form a hollow body, are or consist of polyolefins, in particular polyethylene. As an alternative to polyethylene, polypropylene can also be used. Copolymers with ethylene or propylene as the main component are also suitable, it being possible to use, for example, propylene or ethylene and / or butene, for example 1-butene, or butadiene for the further comonomers. Among the polyethylenes, low-density polyethylene is particularly preferred.

A uniform plastic material is preferably used for all components of the plastic carrier bag according to the invention, for example for the inner and outer layers of the front and rear walls and for the retaining loops of the front and rear walls and, if available, also for the side walls and the bottom surface, a uniform plastic material, for example Polypropylene or polyethylene, polyethylene, and particularly preferably low-density polyethylene, are used. This gives you a single-variety plastic carrier bag, which as such can be recycled without any problems.

Furthermore, among the plastic carrier bags according to the invention, those are particularly suitable in which the at least one inner layer, in particular the inner layer, from the front and / or rear wall is a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed LD- Polyethylene film, comprises or represents. As a result, a textile-like appearance in handling, for example when folding up, of the plastic carrier bag according to the invention can be reinforced. In a corresponding manner, the first flexible, in particular tubular, hollow body or the single or multi-layered material strip, which does not form a hollow body, can comprise or consist of a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and in particular a foamed low-density polyethylene film.

A particularly high degree of stability and tear resistance is also achieved by using a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and in particular a non-foamed low-density polyethylene film, in the aforementioned embodiments. The combination of a foamed plastic inner layer and a non-foamed plastic outer layer surprisingly leads here to plastic carrier bags that are particularly mechanically resilient and permanently stable. The same applies to those preferred embodiments of the holding loop in which the second flexible, in particular tubular, hollow body, in particular the second flexible plastic material strip, is placed on a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and especially a non-foamed plastic film foamed low-density polyethylene film, based on or formed from it.

Accordingly, it can be provided in a very expedient embodiment that the outer layer, the single or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and the at least one inner layer, in particular the inner layer, of the front and rear wall and optionally the retaining loops connected to the front wall and to the rear wall, in particular their first and / or second flexible plastic material strips or their single or multi-layer material strips, which do not form a hollow body, are or consist of polyethylene, especially low-density polyethylene, wherein the at least one inner layer, in particular the inner layer, of the front and rear wall is a foamed polyethylene film, in particular a foamed low-density polyethylene film, and the outer layer of the front and / or rear wall, and optionally the single or multi-layer plastic film strip n of the reinforcement area, a non-foamed polyethylene film, in particular a non-foamed low-density polyethylene film. In this context, such plastic carrier bags are particularly preferred in which the first flexible, in particular tubular, hollow body or the single or multi-layer material strip, which does not form a hollow body, of the holding loop of the front and / or rear wall, in particular the first flexible plastic material strip, is made of foamed polymer material, preferably foamed polyethylene, and particularly preferably foamed low-density polyethylene, is or consists, and preferably the second flexible, in particular tubular, hollow body of the retaining loop of the front and / or rear wall, in particular the second flexible plastic material strip, made of non-foamed polymer material, preferably not foamed polyethylene, and particularly preferably non-foamed low-density polyethylene, is or consists.

In the context of the present invention, the outer layer, the single or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and / or the at least one inner layer, in particular the inner layer, of the front and / or or rear wall expediently in film form.

The plastic carrier bag according to the invention, in particular the single-type plastic carrier bag according to the invention, can be designed so that the outer layer, the single or multi-layer, in particular double-layer, plastic film strip of the reinforcement area, in particular the continuation section of the inner or outer layer, and / or the at least one inner layer , in particular the inner layer, of the front and / or rear wall and optionally the one with the front wall and / or with the Retaining loops connected to the rear wall, in particular their first and / or second flexible plastic material strips or the single or multi-layer material strip that does not form a hollow body, contain or consist of recycled plastic material, in particular recycled polyolefins, for example polyethylene.

Figur 1

eine schematische Querschnittsansicht eines Ausschnitts einer Ausführungsform der erfindungsgemäßen Kunststofftragetasche;

Figur 2

eine schematische Seitenansicht einer erfindungsgemäßen Kunststofftragetasche;

Figur 3

eine schematische laterale Querschnittsansicht einer ersten Ausführungsform einer Halteschlaufe für eine erfindungsgemäße Kunststofftragetasche;

Figur 4

eine schematische laterale Querschnittsansicht einer zweiten Ausführungsform einer Halteschlaufe für eine erfindungsgemäße Kunststofftragetasche;

Figur 5

eine schematische laterale Querschnittsansicht einer dritten Ausführungsform einer Halteschlaufe für eine erfindungsgemäße Kunststofftragetasche und

Figur 6

eine schematische laterale Querschnittsansicht einer vierten Ausführungsform einer Halteschlaufe für eine erfindungsgemäße Kunststofftragetasche.

Further features and advantages of the invention emerge from the following description, in which preferred embodiments of the invention are explained by way of example with reference to schematic drawings. Show it

Figure 1

a schematic cross-sectional view of a section of an embodiment of the plastic carrier bag according to the invention;

Figure 2

a schematic side view of a plastic carrier bag according to the invention;

Figure 3

a schematic lateral cross-sectional view of a first embodiment of a holding loop for a plastic carrier bag according to the invention;

Figure 4

a schematic lateral cross-sectional view of a second embodiment of a holding loop for a plastic carrier bag according to the invention;

Figure 5

a schematic lateral cross-sectional view of a third embodiment of a holding loop for a plastic carrier bag according to the invention and

Figure 6

a schematic lateral cross-sectional view of a fourth embodiment of a retaining loop for a plastic carrier bag according to the invention.

In the embodiment of a plastic carrier bag according to the invention according to Figure 1 the reinforcement area 44, 46 is formed by folding over the continuation section 36, 38 of the outer layer 30, 34. Here the folded, double-layer continuation section is located on or adjacent to the outside of the inner layer 28, 32. In the embodiment shown, the connection of the outer layer, continuation section and inner layer takes place via a welded joint 52, 52 'extending over all layers.

Figure 2 shows a plastic carrier bag 1 according to the invention in a schematic side view. The bag body comprises a bottom end 2 and an opposite opening end 4 with a front wall 6 and a rear wall 8. The front and rear walls have an opening edge 14 and a bottom edge 16 which, when spread out over a large area, regularly represent the maximum extent of the body of the plastic carrier bag reproduce. The holding loops 20 and 22 of the front and rear walls 6 and 8 are attached on the inside in the reinforcement areas 44, 46 of the front and rear walls 6 8, respectively. Accordingly, the respective connection areas 24A, 24B and 26A, 26B are shown in dashed lines in the version shown. In this way, the carrying bag according to the invention can be filled with particular ease. In the illustrated embodiment of a plastic carrier bag 1 according to the invention, it is also of particular advantage that the aforementioned connection areas of the retaining loops do not overlap with the connection weld 52 with which the plastic film strip or continuation section 36 is welded to the front or rear wall.

Figure 3 shows the cross section through a retaining loop 20 for a plastic carrier bag according to the invention containing a first flexible tubular hollow body 110 and a second flexible tubular hollow body 120 which envelops the first hollow body 110. A first tubular structure is thus present within a second tubular structure. The first and second flexible tubular hollow bodies 110, 120 are based on first and second flexible plastic material strips 112 and 122, the first flexible plastic material strip 112 comprising opposing first and second longitudinal side edges 114 and 116 which form an overlap area 118 in the tubular configuration of the hollow body 110. In the same way, the second flexible tubular hollow body 120 is based on a flexible material strip 122, which has opposing first and second longitudinal side edges 124 and 126, which form an overlap region 128 in the tubular configuration. In the Figure 3 The illustrated embodiment according to the invention of a retaining loop 20 for a plastic carrier bag according to the invention is designed such that the first and second longitudinal side edges of the first and second plastic material web 112, 122 are welded to one another in the overlapping areas 118 and 128. In addition, the overlap areas 118 and 128 also form an overlap area 130. In this, the inner side of the second longitudinal side edge 126 of the outer tubular hollow body 120 or the plastic material strip 122 and the outer side of the first longitudinal side edge 114 of the inner tubular hollow body 110 or the first flexible plastic material strip 112 abut one another or face one another and in the embodiment shown connected to one another, in particular welded. In this way, a very stable and mechanically resilient holding loop for a plastic carrier bag is obtained. The flexible plastic material strips 112 and 122 are preferably made of the same plastic material, in particular polyethylene and particularly preferably low-density polyethylene.

Figure 4 shows a further embodiment of a retaining loop 20 for a plastic carrier bag according to the invention. This differs from the embodiment according to FIG Figure 3 by the formation of the respective overlap areas in which the flexible first and second plastic material strips 112 and 122 are connected to one another, in particular welded. In the embodiment shown, the first longitudinal side edge 114 of the first flexible plastic material strip 112 and the second longitudinal side edge 126 of the second flexible plastic material strip 122 abut one another in an overlap area 132 or face one another and are connected to one another, in particular welded, in this area. Furthermore, on the inside of the second longitudinal side edge 126, the first longitudinal side edge 116 of the first flexible plastic material strip 112 is present, which are connected to one another, in particular welded, in an overlapping area 136. This overlap area 136 is preferably essentially congruent with the overlap area described above 132. Correspondingly, the outside of the first longitudinal side edge 114 of the first plastic material strip 112 is the inside of the facing the first longitudinal side edge 124 of the second flexible plastic material strip 122 and connected to one another, in particular welded, in an overlap region 134. The overlap area 134 is preferably essentially in register with the overlap areas 132 and 136.

Figure 5 shows a further embodiment of a retaining loop 20 for a plastic carrier bag according to the invention. This embodiment differs from the holding loop according to FIG Figure 3 essentially in that it is not the first longitudinal side edge of the first flexible plastic material strip 112, but rather the second longitudinal side edge 116 that rests or faces the second longitudinal side edge 126 of the second plastic material strip 122 in the overlap region 130. Accordingly, the first longitudinal side edges 114 and 124 in the embodiment are shown in FIG Figure 5 further apart than in the embodiment according to FIG Figure 3 . Furthermore, the holding loop 100 is according to FIG Figure 5 been pressed flat so that two opposing longitudinal folding edges 138 and 140 are present.

The flexible plastic material strips, in particular that of the second tubular hollow body, that is to say the plastic material strip forming the outer hollow body, can be provided with an embossed pattern in an expedient embodiment (not shown). This results in greater wearing comfort and a feel that corresponds or comes close to that of a textile strap.

Figure 6 a further embodiment of a holding loop 20 for a plastic carrier bag according to the invention can be seen. Here, the first and second longitudinal side edges 124, 126 of the second plastic material strip 122 form an overlap region 128 in which they are connected to one another, in particular welded. In this overlap region, the first and second longitudinal side edges 114, 116 of the first flexible plastic material strip 112 rest on the inside of the second longitudinal side edge 126. In contrast to the previously illustrated embodiments of a holding loop for a plastic carrier bag according to the invention, these are not arranged so as to overlap and, in a preferred embodiment, can abut one another. In the overlap region 142, these first and second longitudinal side edges 114, 116 are connected, in particular welded, to the second longitudinal side edge 126 of the plastic material strips 122 forming the second hollow body 120. Of course, it is also possible that only the second longitudinal side edge 116 of the first plastic material strip 112 is present in the overlap area 142 and is connected, welded to the second longitudinal side edge 126, while the first longitudinal side edge 114 of the first Plastic material strip 112 adjacent thereto, ie without overlapping with the first longitudinal side edge 124 of the second plastic material strip 122 connected to the inside of the second plastic material strip 122, in particular welded, is present (not shown).

The above-described embodiments of a holding loop for a plastic carrier bag according to the invention are also particularly suitable for providing printed holding loops. By printing on the inside of the second plastic material strip, which forms the outer tubular hollow body, a retaining loop with motifs, information or any other colored design can be obtained, which is very resistant to mechanical stress. For this purpose, use is preferably made of transparent second plastic material strips, which are printed on the inside, preferably by means of a reverse printing process.

The features of the invention disclosed in the above description, in the claims and in the drawings can be essential both individually and in any combination for the implementation of the invention in its various embodiments.

Claims (19)

1. A plastic carrier bag (1) having a closed or substantially closed bottom end (2) and an opposite opening end (4), comprising
   a front panel (6) and a rear panel (8), each having a first side edge (10) and an opposite second side edge (12) as well as an opening edge (14) and a bottom edge (16),
   wherein the front panel (6) and the rear panel (8) are joined to one another in the area of their first and second side edges (10,12) and their bottom edges (16) at least in sections directly or via side walls or side folds and/or a bottom fold, as well as
   at least one holding strap (20) joined to the front panel (6) and at least one holding strap (22) joined to the rear panel (8) with a first and a second connecting area (24A, 24B; 26A, 26B) respectively,
   characterized in that the front and the rear panel (6, 8) are designed to be multi-layered, comprising at least an internal layer and an outer layer (28, 30; 32, 34), the front and the rear panel (6, 8) in the area of the opening end (4) have a reinforcing area (44, 46), containing
   at least one multi-layered plastic film strip secured on the inside or outside to the front panel (6) and at least one multi-layered plastic film strip secured on the inside or outside to the rear panel (8) and extending from or at a distance from the first side edge (10) in the direction of or up to the second side edge (12),
   wherein the holding strap joined to the front panel (6) and the holding strap joined to the rear panel (8) are heat-sealed and/or adhered respectively in their first and second connecting areas to the multi-layered plastic film strip of the reinforcing area and also to the at least one internal layer or the outer layer,
   the multi-layered plastic film strip of the reinforcing area of the front panel is secured by means of heat sealing and/or adhesion to the inner or outer layer, and the multi-layered plastic film strip of the reinforcing area of the rear panel is secured by means of heat sealing and/or adhesion to the inner or outer layer,
   wherein
   the holding strap (20) joined to the front panel (6) via its first and second connecting areas (24A, 24B) and the holding strap (22) joined to the rear panel (8) via its first and second connecting area (26A, 26B) has, in the area from the respective first up to the second connecting area, at least in sections, a first flexible hose-like hollow body or a single- or multi-layered material strip, in particular a plastic material strip, not forming a hollow body, which is surrounded in sections or substantially completely by a second flexible hose-like hollow body.
2. A plastic carrier bag (1) having a closed or substantially closed bottom end (2) and an opposite opening end (4), comprising
   a front panel (6) and a rear panel (8), each having a first side edge (10) and an opposite second side edge (12) as well as an opening edge (14) and a bottom edge (16),
   wherein the front panel (6) and the rear panel (8) are joined to one another in the area of their first and second side edges (10,12) and their bottom edges (16) at least in sections directly or via side walls or side folds and/or a bottom fold, as well as
   at least one holding strap (20) joined to the front panel (6) and at least one holding strap (22) joined to the rear panel (8) with a first and a second connecting area (24A, 24B; 26A, 26B) respectively,
   characterized in that the front and the rear panel (6, 8) are designed to be multi-layered, comprising at least an internal layer and an outer layer (28, 30; 32, 34), the front and the rear panel (6, 8) in the area of the opening end (4) have a reinforcing area (44, 46), containing
   at least one multi-layered plastic film strip secured on the inside or outside to the front panel (6) and at least one multi-layered plastic film strip secured on the inside or outside to the rear panel (8) and extending from or at a distance from the first side edge (10) in the direction of or up to the second side edge (12),
   the holding strap joined to the front panel (6) and the holding strap joined to the rear panel (8) are heat-sealed and/or adhered respectively in their first and second connecting areas to the multi-layered plastic film strip of the reinforcing area and also to the at least one internal layer or the outer layer,
   the multi-layered plastic film strip of the reinforcing area of the front panel is secured by means of heat sealing and/or adhesion to the inner or outer layer, and wherein the multi-layered plastic film strip of the reinforcing area of the rear panel is secured by means of heat sealing and/or adhesion to the inner or outer layer, wherein
   an extension section (36) adjoins the outer layer (30, 34),
   wherein the extension section comprises or forms the plastic film strip of the reinforcing area,
   wherein the extension section (36) extends at least in sections along the outside of the at least one internal layer (28, 32) and bears on the latter or can be placed thereon.
3. A plastic carrier bag (1) having a closed or substantially closed bottom end (2) and an opposite opening end (4), comprising
   a front panel (6) and a rear panel (8), each having a first side edge (10) and an opposite second side edge (12) as well as an opening edge (14) and a bottom edge (16),
   wherein the front panel (6) and the rear panel (8) are joined to one another in the area of their first and second side edges (10,12) and their bottom edges (16) at least in sections directly or via side walls or side folds and/or a bottom fold, as well as
   at least one holding strap (20) joined to the front panel (6) and at least one holding strap (22) joined to the rear panel (8) with a first and a second connecting area (24A, 24B; 26A, 26B) respectively,
   characterized in that the front and the rear panel (6, 8) are designed to be multi-layered, comprising at least an internal layer and an outer layer (28, 30; 32, 34), the front and the rear panel (6, 8) in the area of the opening end (4) have a reinforcing area (44, 46), containing
   at least one multi-layered plastic film strip secured on the inside or outside to the front panel (6) and at least one multi-layered plastic film strip secured on the inside or outside to the rear panel (8) and extending from or at a distance from the first side edge (10) in the direction of or up to the second side edge (12),
   wherein the holding strap joined to the front panel (6) and the holding strap joined to the rear panel (8) are heat-sealed and/or adhered respectively in their first and second connecting areas to the multi-layered plastic film strip of the reinforcing area and also to the at least one internal layer or the outer layer,
   the multi-layered plastic film strip of the reinforcing area of the front panel is secured by means of heat sealing and/or adhesion to the inner or outer layer, and
   the multi-layered plastic film strip of the reinforcing area of the rear panel is secured by means of heat sealing and/or adhesion to the inner or outer layer,
   wherein
   an extension section (36) adjoins the at least one internal layer,
   wherein this extension section comprises or forms the plastic film strip of the reinforcing area,
   in which this extension section (36) extends at least in sections along the outside of the at least one internal layer (28, 32), and bears on the latter or can be placed thereon.
4. The plastic carrier bag (1) according to Claim 2 or 3, characterized in that
   the holding strap (20) joined to the front panel (6) via its first and second connecting areas (24A, 24B) and the holding strap (22) joined to the rear panel (8) via its first and second connecting area (26A, 26B) has, in the area from the respective first up to the second connecting area, at least in sections, a first flexible hose-like hollow body or a single-or multi-layered material strip, in particular a plastic material strip, not forming a hollow body, which is surrounded in sections or substantially completely by a second flexible hose-like hollow body.
5. The plastic carrier bag (1) according to Claim 1, 2, 3 or 4, characterized in that
   the holding strap joined to the front panel (6) and the holding strap joined to the rear panel (8) are each thermoplastically heat-sealed in their first and second connecting areas to the multi-layered plastic film strip of the reinforcing area and also to the at least one internal layer or the outer layer, or
   the multi-layered plastic film strip of the reinforcing area of the front panel is secured to the inner or outer layer of or at a distance from the first side edge in the direction of or up to the second side edge by means of thermoplastic heat sealing, or the multi-layered plastic film strip of the reinforcing area of the rear panel is secured by means of thermoplastic heat sealing to the inner or outer layer of or at a distance from the first side edge in the direction of or up to the second side edge.
6. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
   the first and second connecting areas of the holding strap joined to the front panel (6) or the first and second connecting areas of the holding strap joined to the rear panel (8) are present on the inside of the front or respectively rear panel (8) in the area of the multi-layered plastic film strip of the reinforcing area.
7. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
   the front or the rear panel (6, 8) is designed to be double-layered or the multi-layered plastic film strip of the front or rear panel is designed to be double-layered.
8. The plastic carrier bag (1) according to any one of Claims 1 to 7, characterized in that
   the at least one internal layer forms the inner layer.
9. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
   the reinforcing area of the front or rear panel extends up to the opening end or comprises the latter.
10. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
    the outer layer is based on or consists of an, at least in sections, transparent plastic material, in particular polyethylene, which is printable or printed at least in sections on the inside, or
    the at least one internal layer is printable or printed, at least in sections, on the outside and the outer layer is based on or consists of an, at least in sections, transparent plastic material, in particular polyethylene.
11. The plastic carrier bag (1) according to Claim 2 or according to any one of Claims 4 to 10, if and inasmuch as they relate back directly or indirectly to Claim 2, characterized in that
    the extension section (36) present on the outside of the at least one internal layer (28, 32) is, at least in certain areas, designed to be at least double-layered, in particular by means of turning down,
    wherein this at least double-layered extension section (36) is heat-sealed and/or adhered along an extension from or at a distance from the first side edge (10) in the direction of or up to the second side edge (12) to the outside of the at least one internal layer (28, 32) as well as, if applicable, to the outer layer, in particular with a continual longitudinal seal, and
    wherein the outer layer (30, 34) comprises or forms the opening edge (14), wherein the at least one internal layer (28, 32) extends with its upper edge (40, 42) up to the opening edge (14) or at a distance herefrom.
12. The plastic carrier bag (1) according to Claim 3 or according to any one of Claims 4 to 10, if and inasmuch as they relate back directly or indirectly to Claim 3, characterized in that
    the extension section (36) present on the outside of the at least one internal layer (28, 32) is, at least in certain areas, designed to be at least double-layered, in particular by means of turning down,
    wherein this at least double-layered extension section is heat-sealed and/or adhered along an extension from or at a distance from the first side edge (10) in the direction of or up to the second side edge (12) to the outside of the at least one internal layer (28, 32) as well as, if applicable, to the outer layer, in particular with a continual longitudinal seal.
13. The plastic carrier bag (1) according to Claim 2 or according to any one of Claims 4 to 10, if and inasmuch as they relate back directly or indirectly to Claim 2, or according to Claim 3 or according to any one of Claims 4 to 10, if and inasmuch as they relate back directly or indirectly to Claim 3, characterized in that
    the outer layer and the extension section of the front panel (6) or of the rear panel (8) are designed in one piece or the at least one internal layer and the extension section of the front panel (6) or of the rear panel (8) are designed in one piece or the outer layers of the front and rear panel (8) are designed in one piece or the internal layers of the front and rear panel (8) are designed in one piece.
14. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
    the multi-layered plastic film strip of the reinforcing area is heat-sealed and/or adhered via all of its layers to the inside of the at least one internal layer along the extension of or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continual longitudinal seal, forming a first joining strip, wherein the distance of this first joining strip from the lower edge of the reinforcing area is preferably less than it is from the upper edge thereof, in particular on or adjacent to the lower edge of the reinforcing area.
15. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
    the outer layer of the front and/or rear panel (6, 8) is heat-sealed, in particular thermoplastically heat-sealed, and/or adhered, to the outside of the at least one internal layer along the extension of or at a distance from the first side edge in the direction of or up to the second side edge, in particular with a continual longitudinal seal, forming a second joining strip, wherein the distance of this second joining strip from the lower edge of the reinforcing area is preferably less than it is from the upper edge thereof, in particular on or adjacent to the lower edge of the reinforcing area.
16. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
    the first and second connecting areas of the holding straps joined to the front panel (6) or to the rear panel (8), which are obtained in particular by means of heat sealing, at a distance from the joining of the multi-layered plastic film strip of the reinforcing area of the front panel to the inner or outer layer or at a distance from the joining of the multi-layered plastic film strip of the reinforcing area of the rear panel to the inner or outer layer, in particular at a distance from the first and/or second joining strip, do not in particular have any overlapping with the first and, if applicable, second joining strip.
17. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
    the outer layer, the multi-layered plastic film strip of the reinforcing area, and the at least one internal layer of the front or rear panel (6, 8) as well as, if applicable, the holding straps joined to the front panel (6) or to the rear panel (8), in particular the first and/or second flexible plastic material strips thereof or the single- or multi-layered material strip not forming a hollow body, are formed from or consist of polyolefins, in particular polyethylene.
18. The plastic carrier bag (1) according to Claim 17, characterized in that
    the at least one internal layer of the front and/or rear panel (6, 8) comprises or forms a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and, in particular, a foamed LD-polyethylene film, or
    the first flexible, in particular hose-shaped, hollow body or the single- or multi-layered material strip not forming a hollow body comprises or forms a foamed plastic film, preferably a foamed polyolefin film, particularly preferably a foamed polyethylene film and, in particular, a foamed LD-polyethylene film,
    and wherein the outer layer of the front and rear panel (6, 8) preferably forms a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and, in particular, a non-foamed LD-polyethylene film, or wherein the second flexible, in particular hose-shaped, hollow body, in particular the second flexible plastic material strip is based on or formed from a non-foamed plastic film, preferably a non-foamed polyolefin film, particularly preferably a non-foamed polyethylene film and, in particular, a non-foamed LD-polyethylene film.
19. The plastic carrier bag (1) according to any one of the preceding claims, characterized in that
    the outer layer, the multi-layer, plastic film strip of the reinforcing area and the at least one internal layer, in particular the inner layer, of the front and rear panel (8) as well as, if applicable, the holding straps joined to the front panel (6) and to the rear panel (8), in particular the first and/or second flexible plastic material strips thereof or the single- or multi-layered material strips thereof not forming a hollow body, are formed from or consist of polyethylene, in particular LD-polyethylene,
    wherein the at least one internal layer of the front and rear panel (8) forms a foamed polyethylene film, in particular a foamed LD-polyethylene film, and wherein the outer layer of the front and rear panel (6, 8), and, if applicable, the multi-layered plastic film strip of the reinforcing area forms a non-foamed polyethylene film, in particular a non-foamed LD-polyethylene film.

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